by David Jackson, USA TODAY

by David Jackson, USA TODAY

Lu, whose job is basically being the liaison between Cabinet secretaries and the president, is a longtime aide to Obama, and was one of the administration's highest ranking Asian Americans.

Obama praised Lu in a statement:

"Chris Lu is one of my longest-serving and closest advisors, first crafting my legislative agenda in the Senate, then leading my Presidential transition, and most recently, managing my relations with the Cabinet.

"Through his dedication and tireless efforts, Chris has overseen one of the most stable and effective Cabinets in history - a Cabinet that has produced extraordinary accomplishments over the past four years.

"For that reason, I have asked Chris to consider other opportunities to serve in my Administration, and after he enjoys some time off, I hope he will consider those opportunities. I know I speak on behalf of the entire Cabinet in thanking Chris for his friendship and exceptional service to our nation."